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Electrochemical Non-Enzymatic Glucose Sensing Platform Based on Vanadium Pentoxide Film-Modified Screen Printed Gold Electrode
2024
Çiğdem Dülgerbaki
A screen printed gold electrode (SPGE) served as the foundation for directly depositing Vanadium pentoxide (V2O5), crafting an enzyme-free glucose sensor. Through cyclic voltammetry in an alkaline setting, the sensor's ability to drive glucose oxidation was explored. Utilizing V2O5 as an electrocatalyst, this non-enzymatic sensor exhibited an expansive linear detection range (1 mM–10 mM) and an impressively low detection limit of 0.9 μM. These results underscored V2O5's robust electrocatalytic process in facilitating glucose oxidation within alkaline solutions, unaffected notably by substances like ascorbic acid, fructose and maltose. This investigation highlights a direct and efficient method for glucose detection without reliance on enzymes.
Afficher plus [+] Moins [-]Prediction of Live Weight and Carcass Characteristics from Linear Body Measurements of Yearling Male Local Sheep
2024
Shambel Kiros Simone | Likawent Yeheyis
Measurements of the body structure in sheep are worthy of judging the quantitative features of meat and useful in developing appropriate selection requirements. The current study was aimed to predict live weight and hot carcass weight from linear body measurements of yearling male local sheep. 84 days feeding period fortnightly taken data on 24 local sheep for body weight, body length, heart girth, wither height, sub-sternal height, tail length, tail width, scrotal circumference, and scrotal length were analyzed to study the relationship between linear body measurements and body weight. At the end of the trial all sheep were slaughtered to measure the relationship between body measurements, and hot carcass weight. Microsoft Excel 2010 was used for data analysis. The relationships between the various body measurements were calculated using pearson's correlation coefficient. The backward stepwise multiple regression procedure was used for the determination of the most suitable model for the prediction of the live weight and hot carcass weight. Hot carcass weight was highly correlated (P<0.01) with body weight and scrotal circumference. Besides, it was significantly (P<0.05) correlated with tail width. Body weight was significantly (P<0.05) correlated with all body measurements except tail length and scrotal length. It is concluded that the body weight of the local sheep can be predicted with heart girth, sub-sternal height and tail width; the equation is LW= -97.2 + 0.36HG + 2.1SBSH + 0.57TW with a better coefficient of determination; R2 = 0.55 and the hot carcass weight can be predicted with sub-sternal height and tail width; the equation is HCW= -75.66 + 1.75SBSH + 0.85TW with a coefficient of determination; R2 = 0.33. But, hot carcass can be predicted with body weight, the equation is HCW= -9.39+0.85BWT when weighing scales are affordable with a better coefficient of determination; R2= 0.557.
Afficher plus [+] Moins [-]Nutritional Values of Partially Replacing the Commercial Soybean Meal by Raw, Full-Fat Soybean in Diets of Layers
2024
Mammo Mengesha Erdaw | Shambel Taye
The aim of this study was to investigating the effects of partially replacing the commercial soybean meal (SBM) by locally produced raw, full-fat soybean (RFFSB) in diets of layers. After cleaning, the tested ingredient (RFFSB) was hammered to pass through a 0.2-mm sieve. Then, four experimental diets were formulated by replacing the SBM by RFFSB at 0, 15, 30 or 45% (equivalents to 0, 30, 60 or 90 g/kg of diet, respectively). Before the commencement of this feeding trial, birds were uniformly managed and fed as per their requirements (i.e., starter, grower and pullet diets). This feeding trial was started when birds’ age was 24 weeks. Every treatment was replicated 4 times and 17 laying birds per replicate. The results revealed that replacing the commercial SBM by raw soybean (up to 45%) in the layer diets had no negative effects on the final live BWT and also on the vital organ developments, such as pancreas, duodenum, intestines and gizzard. Hen-day egg production, hen-housed egg production and egg quality measuring parameters were not significant affected by that of partially replacing the commercially SBM by the raw soybean. It is concluded that without compromising the productivity and health, a hammered RFFSB can replace (up to 45%) the commercial SBM in diets of the laying hens.
Afficher plus [+] Moins [-]Determination of Yield and Quality Characteristics of Some Fodder Beet (Beta vulgaris L. var. rapa) Varieties in Sakarya Ecological Conditions
2024
Mustafa Yılmaz
This research; it was established under the Sakarya ecological conditions and carried out for 2 years between 2021 and 2023 to determine the yield and quality characteristics of some fodder beet varieties. The experiment was set up with four replications in a randomized blocks trial design. Rekord, Rota, Ursus and Zentaur varieties were used in this research. In the study; in tubers; length (cm), diameter (cm), aboveground length ratio (%), yield (kg/da), dry matter content (%), dry matter yield (kg/da), crude protein ratio (%), sugar ratio (%) and weight loss in storage (%) and in leaves; yield (kg/da), length (cm), width (cm), dry matter ratio (%), dry matter yield (kg/da) and crude protein ratio (%) properties were investigated. The most positive data in the study were obtained from the Ursus variety (In tuber: length; 29.1 cm, yield; 19.309 kg/da, dry matter content; 15.9%, crude protein ratio; 9.30%, sugar ratio; 6.35%, and in leaves; length; 61.0 cm, yield; 2.585 kg/da, dry matter content; 14.0%, crude protein ratio; 23.5%).
Afficher plus [+] Moins [-]Effect of Maltodextrin Concentrations and Drying Temperature on the Physico-chemical Characteristics and Color Measurements of Butterfly Pea Flowers (Clitoria ternatea L) Powder
2024
Kukuk Yudiono
Butterfly pea flower (Clitoria ternatea L.) is a tropical plant that is rich in bioactive compounds, especially anthocyanins which are useful as natural dyes and antioxidant compounds. The bioactive compounds of butterfly pea flowers are unstable due to environmental influences, especially temperature, oxygen, light and acidity. In order to improve the stability of bioactive compounds, especially anthocyanin compounds in powder form, it is necessary to utilize encapsulation technology using coating materials. The aim of this research was to determine the effect of maltodextrin concentration and drying temperature on the physico-chemical characteristics and color measurements of encapsulated butterfly pea flower extract. The research method used was a factorial design prepared using a randomized block design consisting of 2 factors. Factor I (maltodextrin concentration) consisted of 3 levels, namely (10%, 20%, and 30%) while factor II (drying temperature) consisted of 3 levels (70ºC, 80ºC, and 90ºC), with 3 repetitions. The observation variables are: a) antioxidant activity, b) anthocyanin content, c) water content, d) dissolution time, e) color properties (L*, a*, and b*). Based on general research results, a maltodextrin concentration of 10% and a drying temperature of 70ºC showed the best results based on antioxidant activity rate and the highest anthocyanin content (51.47% and 47.36mg/g), as well as color measurements with the lowest L* value = 52, highest a* value = +2.6, and highest b* = -11.16. Except for powder solubility, a maltodextrin concentration of 30% and a drying temperature of 90ºC resulted in the fastest solubility time (16.67 seconds). For water content, all treatments were still in accordance with spice standards in Indonesia and standards issued by the USDA.
Afficher plus [+] Moins [-]Can Biochar Made from Rice Husk Affect Savanna Soils’ pH, Electrical Conductivity, and Soil Respiration?
2024
Ammal Abukari | Prince Cobbinah
Biochar is now gaining awareness as a sustainable tool for soil health improvement, boosting carbon (C) storage and the enhancement of nutrient cycling in agricultural soils. This study assesses the effects of biochar on soil respiration, pH, and electrical conductivity (EC) in savanna soils over a 45-day incubation trail in the laboratory. Four different biochar treatments (0, 2, 4, and 6 t/ha) were used in the study. The treatments were established at 26°C, and after 2, 5, and 10 days, the CO2 levels were recorded. After incubation for 0, 5, 10, and 45 days, the EC and pH were assessed. As the rate of application of biochar increased, the rate of CO2 evolution increased as well. During the first two days of incubation, the CO2 evolution rate rose by a value of 129 at 2 t/ha biochar, 146 at 4 t/ha biochar, and 168 ug CO2/g soil/d at 6 t/ha biochar above the 0 t/ha biochar. Following five days of incubation, the amounts of CO2 evolution that were higher than the control were 99 with 2 t/ha, 116 with 4 t/ha, and 120 ug CO2/g soil/d with 6 t/ha of biochar. The increase in CO2 evolution above the control treatment at 10 days of incubation was 61 with 2 t/ha, 79 with 4 t/ha, and 87 ug CO2/g soil/d with 6 t/ha of biochar. Analogously, rising patterns in CO2 emissions were noted. Throughout the whole incubation period, the biochar treatments' soil EC and pH were greater than those of the control treatment. After applying biochar, there were increases in the evolution of CO2, however after 10 days of incubation, the percentage of C evolved from the addition of biochar decreased as the rates of biochar increased. At two t/ha, four t/ha, and six t/ha, the percentage C developed was 1.74 %, 1.66%, and 0.82% of the applied biochar C, respectively. Although the CO2 evolved ratio to the total amount of biochar C typically reduced with increasing biochar rates, this study shows that the addition of biochar increases soil respiration, EC, and pH.
Afficher plus [+] Moins [-]Investigation of Some Fertility and Growth Traits of Akkaraman Sheep under Breeder Condition in Altunhisar District of Niğde Province
2024
Mustafa Duman | Ahmet Şekeroğlu | Yüksel Aksoy
The aim of this study was to determine some reproductive and growth characteristics and was to analyses some environmental factors the growth and survival performance of lambs between 2017 and 2020 reared within the framework of the National Small Ruminant Project in Altunhisar district of Nigde. The data of the study were collected from 24000 heads ewes and 24869 male and female lambs raised in 25 different farms. The average of infertility, fertility, fecundity, litter size, single and twining rates of Akkaraman ewes were found to be 7.90, 92.10, 1.04, 1.13, 87.49 and 12.51%, respectively. The effects of year of birth, type of birth, age of dam and gender on birth, 60th day and 120th day live weights of Akkaraman lambs were found to be statistically significant (P<0.001). It was also determined that the effect of type of lambing, gender, year of birth and dams age on the survival of lambs at 60th and 120th days was significant (P<0.01). The average survival rate of lambs at 60th and 120th day was 96.2 and 95.3.%, respectively. As a result, it was concluded that while the reproductive characteristics of Akkaraman ewes were in accordance with the literature reports, the effects of the environmental factors on the live weights and survival of lambs were significant and these factors were partially affected by slower growth.
Afficher plus [+] Moins [-]The Effect of Different Irrigation Frequency and Level on Yield and Quality Characteristics of Silage Sorghum
2024
Abdul Mumeen Iddrisu | Kağan Kökten | Erdal Çaçan
This study was carried out to determine the effect of different irrigation frequency and levels on silage sorghum plant for yield and quality at the Bingöl University Agricultural Research and Application Field in 2022 using the Master BMR variety as plant material. Randomized complete blocks applying the split-plots experimental design with three replications was used; four irrigation levels (25%, 50%, 75% and 100%) and four irrigation frequencies (5, 10, 15 and 20 days) were considered as treatments. Percentage of moisture replacement was determined using total moisture loss from evapotranspiration (ET). Amount of water discharged by emitters were predetermined, hence, time was used to determine the exact amount. Properties related to green forage yield, dry matter yield, crude protein ratio, crude protein yield, acid detergent insoluble fibre, neutral detergent insoluble fibre, digestible dry matter, dry matter consumption and relative feed value were investigated. Statistically significant differences between all the examined features were observed. The highest green forage yield, dry matter yield and crude protein yield were obtained from 5-day frequency and 100% level. Highest crude protein ratio from 5-day frequency and 25% level, lowest acid detergent insoluble fibre rate and highest digestible dry matter rate from 20-day frequency and 25% level, highest dry matter intake and relative feed value with the lowest neutral detergent insoluble fibre rate were observed from 25% level with 10 and 20-day frequencies. In conclusion; it can be stated that, to obtain high yield from silage sorghum, it is necessary to irrigate at 5 days frequencies and 100% level. However, high-quality product can be obtained with a 10-day frequency and a 25% level with low yield.
Afficher plus [+] Moins [-]Effects of Partially Replacing the Commercial Soybean Meal, With A Soaked and Boiled Raw Full-Fat Soybean in Broiler Diets
2024
Mammo Mengesha Erdaw | Alemayehu Guteta
The aim of this study was to investigate the effects of partially replacing the commercial soybean meal (SBM) with a home-treated, locally produced raw-full fat soybean (RFFSB) in the diets of broilers. A 3×2×2+1 factorial arrangement was used to conduct this feeding trial. A test ingredient (RFFSB) was differently soaked (0, 6 or 12 hrs), drained, boiled (25 or 35 min) and sundried. Following this, it was hammered to pass through a 0.2-mm sieve, then 12 experimental diets were formulated, replacing the SBM by such a home-treated-RFFSB at 50 or 75%. The control diet didn’t contain any RFFSBN. Totally 13 experimental diets were prepared and every treatment was replicated 3 times and 10 chicks per replicate. The results revealed that replacing the commercial SBM by a treated RFFSB had no significant interaction effects on any measured parameter. However, soaking and then boiling it (RFFSB) had significant (P<0.05) interaction effect on the BWTG (1-13d and 14-28d). When increasing the soaking time, the FI (feed intake), BWTG (body weight gain) and feed efficiency were significantly (P<0.05) decreased. When increasing the boiling duration, both FI and feed efficiency (14-28d) were improved. But, when increasing the replacement rate of RFFSB, the feed efficiency was deteriorated. Broilers fed on both control and diets, containing a non-soaked RFFSB had higher (P<0.05) BWTG (1-13d). Birds fed on diets containing RFFSB that was soaked for the longest period (12 hrs) had significantly lower BWTG. Birds fed on diets, containing prolonged boiling duration had significantly (P<0.05) higher BWTG and feed efficiency. There was no interaction (P> 0.05) effect on both carcass yield and cut-products. Neither increasing a boiling time nor a replacement rate had (P<0.05) any influence on the WT (weight) of the carcass. Birds on both control and on non-soaked RFFSB diets had better WT of carcass products. There was no interaction (P>0.05) effect on organ developments. However, increasing the soaking-duration significantly (P<0.05) reduced the organ developments. Therefore, it is concluded that commercial SBM can be replaced by a non-soaked, but boiled raw soybean in diets of broilers.
Afficher plus [+] Moins [-]Precision Nitrogen Management in Spring Rice (Oryza sativa L.) using Decision Support Tools in Chitwan, Nepal
2024
Kapil Bhattarai | Krishna Raj Pandey | Santosh Marahatta | Manish Dhakal | Nama Raj Bhusal | Rabin Thapa
The blanket prescription of nitrogen (N) fertilizer often results in irrational fertilization. To address this issue and align the application of nitrogen fertilizers with the crop-specific demand, it is imperative to save nitrogen resources, maximize the uptake and net income, and subside environmental pollution. In this context, a field experiment was carried out in Kumroj, Chitwan, Nepal during 2022 to assess the growth, yield, and profitability of rice production by comparing different precision nitrogen management practices. The study was carried out in a randomized complete block design with seven treatments and three replications. The treatments included decision support tools for nitrogen management such as the Green Seeker (GS), the Soil plant analysis development Development (SPAD) meter, and the Leaf Color Chart (LCC) combined with basal application of nitrogen at 30 kg ha–1 and the Urea briquette Deep Placement (UDP), the Polymer Coated Urea (PCU), and the Recommended Dose of Fertilizers (RDF, 120 kg N ha–1). The growth, yield, yield attributes, and financial data were taken. Precision nitrogen management techniques significantly enhanced rice growth and yield parameters. GS–guided application required the highest nitrogen demand (155 kg ha–1), while SPAD (80 kg ha–1) and UDP (78 kg ha–1) resulted in lower usage. PCU and UDP enhanced plant height, leaf area index, and above–ground dry matter. Higher grain yield (6.64 t ha–1) was attained with LCC, SPAD (6.44 t ha–1), and UDP (6.41 t ha–1) treatments. GS application exhibited the highest straw yield (11.17 t ha–1), while LCC demonstrated the highest benefit–cost ratio (1.96). This study concluded that SPAD and UDP demonstrated the potential to save nitrogen resources, while LCC and UDP were found profitable.
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